The setup:Note: the bungee is just there for piece of mind. The projector is securely mounted by thee counter screws.

Wired sensor bar for presenter WiiRemote (above whiteboard)

AC to DC powered WiiRemote

IR Pen v1 (radioshack momentary switch and LED)

IR Pen v2 #1 (Vishay TSAL 6400, circuit momentary switch)

IR Pen v2 #2

IR Touch Pen (experimental)modded push key chain incandescent light bulbLED moded to light build screw hardwareThis does not work except for clicking, the dragging action causes the IR led circuit to not always be complete and the light flickers. This current configuration just does not work with wiring, although clicking is great.

:Dthanks katutxakur for giving me an idea.... and you have just asked an interesting question, cause I also understand you have to press the two buttons to start sync, however, maybe you only do this operation once.... don't you think?